Which pictogram indicates health hazard that could cause severe health effects?

• A. Health hazard
• B. Skull and crossbones
• C. Exclamation mark
• D. Environmental

Answer: (A)

The health hazard pictogram is used for substances that can cause serious health effects, including long-term or irreversible problems such as cancer, reproductive toxicity, or organ toxicity. It signals risks from exposure that may be severe or occur with chronic use, not just immediate poisoning. In contrast, the skull and crossbones marks acute toxicity (immediate danger of death), the exclamation mark covers milder hazards like irritation or skin sensitization, and the environmental pictogram warns about harm to the environment. So the pictogram that best indicates health hazard with potential severe health effects is the health hazard symbol.